var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var cors = require('cors')
// var expressJWT = require("express-jwt")

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

//配置跨域
app.use(cors())

//配置登录鉴权中间件  express-jwt
// app.use(expressJWT({
//   //解析口令 需要和加密的时候保持一致
//   secret: "lce",
//   //加密方式 SHA256 加密方式在express-jwt 里面叫做 HS256
//   algorithms: ["HS256"]
// }).unless({
//   //不需要验证token 的路径标识 (下面的路由不需要进行token验证)(白名单)
//   path: ["/login"]
// }))

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use("/upload", express.static('upload'));

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
